CN210141236U - Hydraulic driving device - Google Patents
Hydraulic driving device Download PDFInfo
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- CN210141236U CN210141236U CN201920976559.6U CN201920976559U CN210141236U CN 210141236 U CN210141236 U CN 210141236U CN 201920976559 U CN201920976559 U CN 201920976559U CN 210141236 U CN210141236 U CN 210141236U
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Abstract
The utility model discloses a hydraulic drive device, which relates to the technical field of hydraulic equipment and comprises an oil pump, a hydraulic motor, an oil inlet pipe and an oil return pipe, wherein a pressure relief assembly is connected between the oil inlet pipe and the oil return pipe through a pipeline and comprises a first overflow valve and a second overflow valve which are connected in series or in parallel; the second overflow valve is connected with an electromagnetic valve for controlling the connection state of the second overflow valve through a pipeline; when the first overflow valve and the second overflow valve are arranged in parallel, the threshold value of the first overflow valve is higher than that of the second overflow valve. The utility model provides a cost performance is high, requires to save the cost simultaneously guaranteeing the speed governing, conveniently maintains a hydraulic drive device with the debugging under the equipment behavior not influencing.
Description
Technical Field
The utility model relates to a hydraulic equipment technical field, specifically speaking, it relates to a hydraulic drive device.
Background
On many oceaneering ships, side thrusters are installed on both sides in the width direction of the ship. The side thrusters often act as auxiliary steering devices for the vessel when the vessel is travelling at low speeds. The rotating speeds of the propellers on the two transverse sides of the ship are controlled to enable the two propellers to generate a rotating speed difference, so that the thrust of the two transverse sides of the ship to water is unbalanced, and steering is achieved. In practice, a hydraulic motor is often used to drive the propeller. To achieve steering of the ship, a hydraulic motor connected to the propeller is required to be capable of adjusting the speed.
The utility model discloses a current patent grant publication number is CN201053389 discloses a hydraulic motor speed governing controller, including hydraulic motor, hydraulic motor rotational speed signal output termination tachometer, tachometer signal output termination microcomputer signal input part, microcomputer signal output termination control switch, control switch connect the converter power cord, and the converter has connect hydraulic motor, and the control potentiometer connects the microcomputer control signal input part.
In actual use, the rotating speed of the hydraulic pump motor is controlled through the frequency converter to control the oil quantity and the oil pressure of the hydraulic station, and therefore speed regulation is achieved. However, although the frequency converter can achieve a good speed regulation effect, the frequency converter is expensive, and the requirements of the side thruster on speed regulation are not high, and only a certain difference in rotating speed exists between propellers on two sides of the ship in the width direction, so that the cost performance of the method is not high.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model aims at providing a hydraulic drive device is through the overflow valve that sets up two different threshold values on advancing oil pipe to with the solenoid valve cooperation, realize hydraulic motor two-stage speed governing, save the cost when guaranteeing the speed governing requirement, improve the price/performance ratio.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a hydraulic driving device comprises an oil pump, a hydraulic motor, an oil inlet pipe and an oil return pipe, wherein a pressure relief assembly is connected between the oil inlet pipe and the oil return pipe through a pipeline and comprises a first overflow valve and a second overflow valve which are connected in series or in parallel; the second overflow valve is connected with an electromagnetic valve for controlling the connection state of the second overflow valve through a pipeline; when the first overflow valve and the second overflow valve are arranged in parallel, the threshold value of the first overflow valve is higher than that of the second overflow valve.
By adopting the technical scheme, when the hydraulic pressure relief assembly is used, the oil pump is driven to enable the pressure of the hydraulic circuit to be greater than the maximum value of the threshold value of the pressure relief assembly under the condition that the pressure relief assembly is not connected; through the switch-on or switch-off of the control electromagnetic valve, the pressure relief assembly corresponds to two different thresholds, and then the hydraulic circuit is controlled to correspond to two different pressures, so that the hydraulic motor corresponds to two different rotating speeds. By the mode, the rotating speed difference between the propellers on the two sides of the ship is ensured, the structure is simplified, and the cost is saved.
The utility model discloses further set up to: an oil inlet of the first overflow valve is connected with an oil inlet pipe through a pipeline; the first overflow valve is provided with an oil control port communicated with an oil inlet of the first overflow valve; an oil inlet of the electromagnetic valve is connected with an oil control port through a pipeline, and an oil outlet of the electromagnetic valve is connected with a second overflow valve through a pipeline; the oil outlets of the first overflow valve and the second overflow valve are connected with an oil return pipe through pipelines.
By adopting the technical scheme, when the hydraulic pressure relief device is used, the threshold value of the first overflow valve is set to be larger than that of the second overflow valve, and the oil pump is driven to enable the pressure of the hydraulic circuit to be larger than that of the first overflow valve under the condition that the pressure relief assembly is not connected; when the electromagnetic valve is closed, the first overflow valve is used for relieving the pressure of the hydraulic circuit, and the pressure of the hydraulic circuit is the threshold value of the first overflow valve; when the electromagnetic valve is opened, the first overflow valve is out of action, the second overflow valve is used for decompressing the hydraulic circuit, and the pressure of the hydraulic circuit is the threshold value of the second overflow valve. Through the mode, the hydraulic circuit is convenient to switch between two working pressure values, and therefore two-stage speed regulation of the hydraulic motor is achieved.
The utility model discloses further set up to: an oil inlet of the first overflow valve is connected with an oil inlet pipe through a pipeline; an oil outlet of the first overflow valve is connected with an oil inlet of the second overflow valve and an oil inlet of the electromagnetic valve through a pipeline; and oil outlets of the second overflow valve and the electromagnetic valve are connected with an oil return pipe through pipelines.
By adopting the technical scheme, when the hydraulic pressure relief assembly is used, the oil pump is driven to enable the pressure of the hydraulic circuit to be larger than the sum of the threshold value of the first overflow valve and the threshold value of the second overflow valve under the condition that the pressure relief assembly is not connected; when the electromagnetic valve is opened, the first overflow valve independently relieves the pressure of the hydraulic circuit, and the pressure of the hydraulic circuit is the threshold value of the first overflow valve; when the electromagnetic valve is closed, the first overflow valve and the second overflow valve are connected in series, and the pressure of the hydraulic circuit is the sum of the threshold value of the first overflow valve and the threshold value of the second overflow valve. Through the mode, the difference value between the pressures of the two hydraulic loops is conveniently controlled by adjusting the threshold value of the second overflow valve when the device works, the difference of the rotating speeds of the two gears is not too large, and the stability of the ship during steering is improved.
The utility model discloses further set up to: the oil inlet pipe is connected with a first reversing valve through a pipeline, and the first reversing valve comprises a first oil outlet and a second oil outlet; the first oil outlet is connected with the pressure relief assembly through a pipeline; the second oil outlet is connected with a standby overflow valve through a pipeline, and the oil outlet of the standby overflow valve is connected with an oil return pipe through a pipeline.
By adopting the technical scheme, when the hydraulic oil return device works normally, the first reversing valve is communicated with the first oil outlet, hydraulic oil flows through the pressure relief assembly and is output to the oil return pipe, and the pressure relief assembly is utilized to control the pressure of the whole hydraulic loop; when the pressure relief assembly is in fault or maintained, the first reversing valve is communicated with the second oil outlet, hydraulic oil flows through the standby overflow valve and is output to the oil return pipe, and the pressure of the whole hydraulic loop is controlled by the standby overflow valve. By the mode, the uninterrupted operation of the hydraulic driving device during maintenance or failure is ensured, and the use convenience of the hydraulic driving device is improved.
The utility model discloses further set up to: a debugging oil inlet valve is connected with a pipeline between the first oil outlet and the pressure relief assembly; and a second reversing valve is arranged on a pipeline between the pressure relief assembly and the oil return pipe, one oil outlet of the second reversing valve is connected with a debugging oil return pipe, and the other oil outlet of the second reversing valve is connected with the oil return pipe.
By adopting the technical scheme, when the threshold values of the first overflow valve and the second overflow valve are required to be reset, the first reversing valve can be firstly connected to the second oil outlet, then the second reversing valve is connected to the debugging oil return pipe, the debugging oil inlet valve, the pressure relief assembly and the debugging oil outlet pipe form a debugging loop, the debugging loop is connected into another hydraulic loop, and the threshold values of the first overflow valve and the second overflow valve are reset. Through the mode, the threshold values of the first overflow valve and the second overflow valve are set under the condition that the work of the driving device is not influenced, and the use convenience of the hydraulic driving device is improved.
The utility model discloses further set up to: the oil inlet pipe is connected with a safety overflow valve through a pipeline, an oil inlet of the safety overflow valve is connected with the oil inlet pipe, and an oil outlet of the safety overflow valve is connected with the oil return pipe.
By adopting the technical scheme, when the pressure of the hydraulic circuit is greater than the threshold value of the safety overflow valve, the safety overflow valve can relieve the pressure of the hydraulic circuit. In this way, the safety of the use of the device is ensured.
The utility model discloses further set up to: the electromagnetic valve is a proportional electromagnetic valve.
By adopting the technical scheme, in the two-gear speed regulation process, the flow of the hydraulic oil in the proportional solenoid valve is gently increased or decreased, so that the speed regulation process is more gentle. In this way, the stability of the vessel is improved.
The utility model discloses further set up to: and a filter screen is arranged at an oil inlet of the oil pump.
By adopting the technical scheme, the hydraulic oil is firstly filtered by the filter screen when entering the oil pump. By the mode, solid impurities in the hydraulic oil are prevented from flowing into the hydraulic circuit, the hydraulic circuit is prevented from being blocked, and the service life of the hydraulic driving device is prolonged.
To sum up, the utility model discloses following beneficial effect has:
1. the pressure relief assembly is arranged between the oil inlet pipe and the oil outlet pipe, so that the speed of the hydraulic motor is regulated, the structure is simplified, and the speed regulation cost is reduced;
2. by arranging the first reversing valve and the standby overflow valve, when the pressure relief assembly is in fault or needs to be maintained, the hydraulic driving device does not need to stop working, and the use convenience of equipment is improved;
3. through setting up the debugging admission valve and debugging back oil pipe, the convenience is debugged or parameter setting to the pressure release subassembly under the condition that does not influence equipment work, improve the convenience that equipment used.
Drawings
FIG. 1 is a schematic structural view mainly for embodying the overall structure of embodiment 1;
FIG. 2 is a schematic structural view mainly for embodying the overall structure of embodiment 2;
FIG. 3 is a schematic structural view mainly for embodying the overall structure of embodiment 3;
fig. 4 is a schematic structural view mainly used for embodying the pressure relief assembly in embodiment 3.
Reference numerals: 1. an oil pump; 2. an oil inlet pipe; 3. an oil return pipe; 4. a hydraulic motor; 5. a filter screen; 6. a safety overflow valve; 7. a first direction changing valve; 701. a first oil outlet; 702. a second oil outlet; 8. a working circuit; 9. a first overflow valve; 901. an oil control port; 10. a second overflow valve; 11. an electromagnetic valve; 12. a backup loop; 13. a standby overflow valve; 14. a reversing tee joint; 15. a second directional control valve; 151. a third oil outlet; 152. a fourth oil outlet; 16. debugging an oil inlet valve; 17. and debugging an oil return pipe.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1:
referring to the attached drawing 1, the hydraulic driving device comprises an oil pump 1, wherein an oil inlet pipe 2 and an oil return pipe 3 are arranged on the oil pump 1, and a filter screen 5 is arranged at an oil inlet of the oil pump 1 and used for filtering impurities in hydraulic oil. The oil pump 1 is connected to a hydraulic motor 4. When the device works, hydraulic oil enters the oil pump 1 through the filter screen 5, flows through the hydraulic motor 4 and is output through the oil return pipe 3, and a hydraulic loop is formed among the oil inlet pipe 2, the hydraulic motor 4 and the oil return pipe 3.
A pressure relief assembly is connected between the oil inlet pipe 2 and the oil return pipe 3 through a pipeline. The pressure relief assembly comprises a first overflow valve 9 and a second overflow valve 10 which are arranged in parallel and an electromagnetic valve 11 which is connected with the second overflow valve 10 in series: an oil inlet of the first overflow valve 9 is connected with the oil inlet pipe 2, and an oil outlet of the first overflow valve 9 is connected with the oil return pipe 3; an oil control port 901 communicated with an oil inlet of the first overflow valve 9 is formed in the first overflow valve 9, the oil control port 901 is connected with an oil inlet of an electromagnetic valve 11, an oil outlet of the electromagnetic valve 11 is connected with an oil inlet of a second overflow valve 10 through a pipeline, and an oil outlet of the second overflow valve 10 is connected with an oil return pipe 3; and the threshold of the first relief valve 9 is higher than the threshold of the second relief valve 10. In addition, the solenoid valve 11 may be a proportional solenoid valve.
The working principle of the embodiment is as follows: when the hydraulic pressure relief device is used, the oil pump 1 is driven to enable the pressure of the hydraulic circuit to be larger than the threshold value of the first overflow valve 9 under the condition that the pressure relief assembly is not connected; if the electromagnetic valve 11 is closed, when the pressure of the hydraulic circuit is higher than the threshold value of the first overflow valve 9, the first overflow valve 9 releases the pressure of the hydraulic circuit, so that the pressure of the hydraulic circuit is kept at the threshold value of the first overflow valve 9; if the electromagnetic valve 11 is opened, the first overflow valve 9 is disabled, and when the pressure of the hydraulic circuit is higher than the threshold of the second overflow valve 10, the second overflow valve 10 releases the pressure of the hydraulic circuit, so that the pressure of the hydraulic circuit is maintained at the threshold of the second overflow valve 10. By the mode, the pressure of the hydraulic loop can be adjusted between two threshold values, so that two-stage speed regulation of the hydraulic motor 4 is realized, the speed regulation requirement is ensured, the cost is saved, and the cost performance is improved.
Example 2:
referring to the attached drawing 2, the hydraulic driving device is different from the hydraulic driving device in embodiment 1 in that a safety overflow valve 6 is disposed on an oil inlet pipe 2, an oil inlet of the safety overflow valve 6 is connected to the oil inlet pipe 2 through a pipeline, and an oil outlet of the safety overflow valve 6 is connected to an oil return pipe 3 through a pipeline. When the safety relief valve is used, the threshold value of the safety relief valve 6 is set to be close to but smaller than the maximum bearing pressure value of a pipeline, and when the pressure of the hydraulic circuit is higher than the threshold value of the safety relief valve 6, the hydraulic circuit can be relieved through the safety relief valve 6, so that the use safety of equipment is guaranteed.
Referring to fig. 2, the oil inlet pipe 2 is further provided with a first reversing valve 7, and the first reversing valve 7 includes an oil inlet and two oil outlets. An oil inlet of the first reversing valve 7 is connected with the oil inlet pipe 2 through a pipeline, and two oil outlets of the first reversing valve 7 are a first oil outlet 701 and a second oil outlet 702 respectively; the first oil outlet 701 is connected with a working loop 8, and the second oil inlet is connected with a standby loop 12. When the equipment works, the equipment can be switched between the working circuit 8 and the standby circuit 12 by controlling the connection state of the first reversing valve 7.
The backup circuit 12 is provided with a backup relief valve 13, and the threshold value of the backup relief valve 13 can be set to be equal to the threshold value of the first relief valve 9. An oil inlet of the standby overflow valve 13 is connected with the second oil outlet 702 through a pipeline, and an oil outlet of the standby overflow valve 13 is connected with the oil return pipe 3 through a pipeline, so that a standby loop 12 is formed.
The pressure relief assembly is arranged on the working loop 8, a first oil outlet 701 is connected with an oil inlet of a first overflow valve 9, and oil outlets of the first overflow valve 9 and a second overflow valve 10 are both connected with a reversing tee joint 14; oil outlets of the first overflow valve 9 and the second overflow valve 10 are connected to two ports of the reversing tee 14 through pipelines, and the rest ports of the reversing tee 14 are connected with a second reversing valve 15 through pipelines. A third oil outlet 151 and a fourth oil outlet 152 are arranged on the second reversing valve 15; the third oil outlet 151 is connected to the oil return pipe 3 through a pipeline, thereby forming the working circuit 8.
Referring to fig. 2, a debugging oil inlet valve 16 is also connected to the pipeline between the first reversing valve 7 and the first overflow valve 9; the fourth oil outlet 152 is connected with a debugging oil return pipe 17; the debugging oil inlet valve 16, the pressure relief assembly and the debugging oil return pipe 17 form a debugging loop. When the first reversing valve 7 is connected to the standby circuit 12, the second reversing valve 15 can be connected to the debugging oil return pipe 17, and the pressure relief assembly is connected to another hydraulic circuit, so that the threshold values of the first overflow valve 9 and the second overflow valve 10 can be detected and set under the condition that the work of the hydraulic driving device is not influenced.
The working principle of the embodiment is as follows: when the equipment normally works, the first reversing valve 7 is communicated to the working loop 8, and meanwhile, the second reversing valve 15 is communicated to the oil return pipe 3; when the pressure relief assembly is in fault or needs maintenance, the first reversing valve 7 is communicated to the standby loop 12, and the standby overflow valve 13 relieves the pressure of the hydraulic loop to ensure that the hydraulic driving device works normally; when the pressure relief assembly needs to be debugged or the parameters are set, the first reversing valve 7 is communicated to the standby loop 12, the second reversing valve 15 is communicated to the debugging oil return pipe 17, the other hydraulic loop is connected to the debugging oil inlet valve 16 and the debugging oil return pipe 17, and the pressure relief assembly is debugged or the parameters are set. By the mode, the speed regulation cost is saved, the equipment is convenient to maintain and debug, and the cost performance and the use convenience of the equipment are improved.
Example 3:
referring to fig. 3 to 4, a hydraulic drive apparatus differs from embodiment 2 in that a pressure relief assembly includes a first relief valve 9 and a second relief valve 10 arranged in series and a solenoid valve 11 connected in parallel to the second relief valve 10: oil inlets of the electromagnetic valve 11 and the second overflow valve 10 are both connected with an oil outlet of the first overflow valve 9 through a pipeline, oil outlets of the electromagnetic valve 11 and the second overflow valve 10 are respectively connected with two connectors of the reversing tee 14, and the rest connector of the reversing tee 14 is connected with the second reversing valve 15 through a pipeline.
When the hydraulic pressure relief device is used, the oil pump 1 is driven to enable the pressure of the hydraulic circuit to be larger than the sum of the threshold value of the first overflow valve 9 and the threshold value of the second overflow valve 10 under the condition that the pressure relief assembly is not connected; when the electromagnetic valve 11 is opened, the first overflow valve 9 independently relieves the pressure of the hydraulic circuit, and the pressure of the hydraulic circuit is the threshold value of the first overflow valve 9; when the electromagnetic valve 11 is closed, the first overflow valve 9 and the second overflow valve 10 are connected in series, and the pressure of the hydraulic circuit is the sum of the threshold value of the first overflow valve 9 and the threshold value of the second overflow valve 10.
The working principle of the embodiment is as follows: when the equipment normally works, the oil pump 1 is driven to ensure that the pressure of a hydraulic circuit is greater than the sum of the threshold value of the first overflow valve 9 and the threshold value of the second overflow valve 10 under the condition that the pressure relief assembly is not communicated, the first reversing valve 7 is communicated with the working circuit 8, and meanwhile, the second reversing valve 15 is communicated with the oil return pipe 3; when the electromagnetic valve 11 is opened, the first overflow valve 9 relieves the pressure of the hydraulic circuit, so that the pressure of the hydraulic circuit is kept at the threshold value of the first overflow valve 9; when the electromagnetic valve 11 is closed, the first overflow valve 9 and the second overflow valve 10 are connected in series to relieve the pressure of the hydraulic circuit, so that the pressure of the hydraulic circuit is kept at the sum of the threshold value of the first overflow valve 9 and the threshold value of the second overflow valve 10. By the mode, the difference value between the pressures of the two hydraulic loops is conveniently controlled by adjusting the threshold value of the second overflow valve 10 when the device works, the difference of the rotating speeds of the two gears is not too large, and the stability of the ship during steering is improved.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (8)
1. A hydraulic driving device comprises an oil pump (1), a hydraulic motor (4), an oil inlet pipe (2) and an oil return pipe (3), and is characterized in that a pressure relief assembly is connected between the oil inlet pipe (2) and the oil return pipe (3) through a pipeline, and the pressure relief assembly comprises a first overflow valve (9) and a second overflow valve (10) which are arranged in series or in parallel; the second overflow valve (10) is connected with an electromagnetic valve (11) used for controlling the connection state of the second overflow valve (10) through a pipeline; when the first overflow valve (9) and the second overflow valve (10) are arranged in parallel, the threshold value of the first overflow valve (9) is higher than that of the second overflow valve (10).
2. The hydraulic driving device as claimed in claim 1, wherein the oil inlet of the first overflow valve (9) is connected with the oil inlet pipe (2) through a pipeline; an oil control port (901) communicated with an oil inlet of the first overflow valve (9) is formed in the first overflow valve; an oil inlet of the electromagnetic valve (11) is connected with an oil control port (901) through a pipeline, and an oil outlet of the electromagnetic valve (11) is connected with a second overflow valve (10) through a pipeline; oil outlets of the first overflow valve (9) and the second overflow valve (10) are connected with the oil return pipe (3) through pipelines.
3. The hydraulic driving device as claimed in claim 1, wherein the oil inlet of the first overflow valve (9) is connected with the oil inlet pipe (2) through a pipeline; an oil outlet of the first overflow valve (9) is connected with an oil inlet of the second overflow valve (10) and an oil inlet of the electromagnetic valve (11) through a pipeline; oil outlets of the second overflow valve (10) and the electromagnetic valve (11) are connected with an oil return pipe (3) through pipelines.
4. A hydraulic drive arrangement according to claim 1, characterized in that said oil inlet pipe (2) is connected by a pipeline to a first reversing valve (7), said first reversing valve (7) comprising a first oil outlet (701) and a second oil outlet (702); the first oil outlet (701) is connected with a pressure relief assembly through a pipeline; the second oil outlet (702) is connected with a standby overflow valve (13) through a pipeline, and the oil outlet of the standby overflow valve (13) is connected with an oil return pipe (3) through a pipeline.
5. A hydraulic drive arrangement according to claim 4, characterized in that a line between said first outlet port (701) and said pressure relief assembly is connected to a debugging oil inlet valve (16); a second reversing valve (15) is arranged on a pipeline between the pressure relief assembly and the oil return pipe (3), one oil outlet of the second reversing valve (15) is connected with a debugging oil return pipe (17), and the other oil outlet of the second reversing valve (15) is connected with the oil return pipe (3).
6. The hydraulic driving device according to claim 1, wherein a safety overflow valve (6) is connected to the oil inlet pipe (2) through a pipeline, an oil inlet of the safety overflow valve (6) is connected to the oil inlet pipe (2), and an oil outlet of the safety overflow valve (6) is connected to the oil return pipe (3).
7. A hydraulic drive as claimed in claim 1, characterized in that said solenoid valve (11) is a proportional solenoid valve.
8. The hydraulic drive of claim 1, characterized in that a filter screen (5) is arranged at the oil inlet of the oil pump (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920976559.6U CN210141236U (en) | 2019-06-26 | 2019-06-26 | Hydraulic driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920976559.6U CN210141236U (en) | 2019-06-26 | 2019-06-26 | Hydraulic driving device |
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| CN210141236U true CN210141236U (en) | 2020-03-13 |
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| CN201920976559.6U Active CN210141236U (en) | 2019-06-26 | 2019-06-26 | Hydraulic driving device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999219A (en) * | 2020-07-13 | 2020-11-27 | 山东大学 | Smoke intensity detection method and system for engineering machinery |
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2019
- 2019-06-26 CN CN201920976559.6U patent/CN210141236U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999219A (en) * | 2020-07-13 | 2020-11-27 | 山东大学 | Smoke intensity detection method and system for engineering machinery |
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